Improved feed-water heater for locomotives



PATENTBD JAN. 19, -1864-.v Y D; POLLQGK. lPARI) WATER HEATER PoR LOGOMOTIVBS.

' companying drawings, forming a part of this UNITED STATE-s PATENT OFFICE.

DAVID POLLOGK, 0F LANCASTER, PENNSYLVANIA.

IMPaovEo FEED-WATER HEATERA FORLOCOMOTIVES.

Specification forming port of Letters Patent No. 41.319, datcdJannary 19, 1864; antedated Jnnusiy-i7,"1sc4.

To all .whom it may concern:

Be it known that I, DAVID Pollock, of Lancaster, in the county of Lancaster and State of Pennsylvania., have linvented a cerf tain new and useful ImprtWement-in- Steam- Engines, for the purpose of heating and circulating the feed-Water contained in the tank 0r cistern for supplying steam-boilersv with heated water; and I lo hereby declare that` the -following is a full and exact 'description ofthe same, reference being hudvto the ac` specification, inwhich-H of my'invention. Fig, 2 is `a `vertical longitudinal section. Fi gt3 is a verticali' transverse section.

Similar letters of reference indicate correl spending,r parts inthe different. figures.;` The invention 'consists in certain pro'Ltf'iti'ous. 4 Abeing made for heating and circulating the feed-water contained in the tankor 'cistern and conducting it through the heatersf--and returning the water after being heated to the tank or to. a separate chamber providedl for it, from which the heated water is drawn. for snp.- plying the steam-boiler'. l Y

A A represents the steam-boiler, .which may be constructed in the usual man-ner or form; B B, the iirefboir; C O, the smokefbox; D D,

the boiler supp1y-pipes; E E, the tank or 'cisl tern, which contains the feed-water for-'snpplying the steam-boiler; F F, the pipe or hose,

which conducts the water from the tank to the heater G G in the fire-box and to the heater H Hin the smoke-box. The said heat- A ers in the lire-box and sinokebox may be connectedy together by. extending the pipes I I of the smoke-box heater back to the tirebox, and connecting them 'to the fire-box heaters G G,

' when the water in the tank or cistern will be circulated throughboth heaters; or either one of the heaters maybe used separately and independent of the other for heating the water contained in the tank or cistern for supplying the steam-boiler! A The heater G G in the lire-box is constructed of tubular bars -or pipes, but notconnected p with the' water-space iu the tire-box ory boiler,

through which the water from fthe tank circulates, these tubular bars or pipes servingat the salme time for the `re-grates,exteudin g above at one side of the heater G G, audiconnected toit at one or more places. 'The ,tubular pipes KK are arranged either horizontally or fvertically, for the purpose o'f increasing the heat of the water and expanding it more in that part or side of the heater than the Water in the opposite side, thus making the water in that part of the heater lighter, so that it will pass oi' freely through the pipe L L to the tank or to a separate chamber.

The heater H H in the smoke-box is constructed df one or more plain chambers, as' l shown, of any suitable size, placed at the bot- Fi'gure 1 is a plan viewof thelconstruction,

ltom of the inside of vthesmoke-box, having one o r more circular pip es,M2 M2, attached, as shown, and curve/l around to suit the radius o1' the smoke box.v These circular` pipes'are v for the purpose of admitting the steam to rise giving additional heat to the Water within the ih'eater, and serving to keep the smoke-box cool.V At onel side otthis heater'aud at the frontend the pipe N N isattached, as shown, 4for the purpose of reheating'the water to make it lighter at that side of the heater, `so that .it will discharge morey freely for snpplyingthe tank-or chamber-with heatedwaterfor the steam boiler. Y l I .Within the-tank E E are arranged one or more circulating chambers, as' shown at O 0,A

'vor-the said chambers may be arrangedseparate from the tank. This chamber is for the purpose'of-circulating the watercontained in the tanks through'the heaters, the height-or. vlevel of the water in the chamber() 0 being regulated by the valve M, and operated by the f attached float Q, the height of .water in this vchamber being-kept belowthe height or levelofthe water in the tank, the water being drawn -oi by the pumps fromthe chamberO Othrouqh the pipes o r .hose RR for; the supply'of the steam-boiler.- By this means a constant circu.

lation of 'the vwater through the 'pipes and heaters is maintained. YIn' the float-valve M there I is a'- suitable opening, as shown at. S, for the purpose of allowing the heatedwate'r to rise up through theppipe L L into the chamber' when the Valve M is closed against its seat. T T are stop cocks in the pipes, to continethe water in the heaters vwhen the tank is sepf arated lfrom the boiler.' U is, a safety-valve above the water contained lin the lower part' f-the heater, for the purpose of the steam together.

connected to the heater in the tire-box, and is f These I do not claim. for the purpose of discharging steam from the What I claim as my invention, and desire to heaters when required. V is a pipe connectsecure by Letters Patent, is

ingthe heaters to the waterspace of thesteam- 1. One or more circulating-chambers, in boiler, for the'purpose ot' filling the heater combination with the tank and heaters, subwith water-when the tank and boiler are sepif' stanti-ally as and for the purpose set forth. arated. 2. lhe tubular bars or grates G G in the Wis a 'stop for shutting the communication furnace or fireboX, in combination with one between the heater and Water-space of the l boiler when the tank and boiler are connected; teedwater, substantially as set forth.

3. One or more pipes, K K, attached tothe I am aware of Water-heaters being used iu fire-grate heater, and extendingabove the furnaces or tireboxes of steam-boilers, cong1'ate,as herein described, for the purpose set structed in different forms, and being conforth. uected to the water-space of the steam-boiler, 4. The valve M with the float Q attached, the Water thus circulating equally through the in combination .with the circulating-chamber, heater and boiler. tank, and heaters, substantially as and for the I am also aware of the water-feed pipes be purpose herein described. ing attached to heaters, und pumpingl the 5.,'Tl1e pipe V With 'thestop W, arranged Watcrinto the heaters for supplying the boiler, as shown, for the purpose speciiied.

these heaters being for the purpose of assist- 6. Combining, with `thel `heater' G G in the ing to generate steam in connection with the irebox, the safety-valve U, for the purpose boiler. 'herein set forth.

I ain also aware of heaters being used in a 7. r.the heater H H in the smoke-box, convariety of shapes in and around the smokestructed with the circular pipes',` substantially box and stack of steam-boilers, the water be as shown and described. ing pumped into these heaters for supplying 8. The reheating-pipe N N, constructed as the boilers. and for the purposespecicd. A

I am also awareof the feed-waterin the tank 9. The hose or pipes F and L, in combinabeing pumped through heaters in and around tion with the ta nk, heaters and circulatingthe smoke-box and'stackand back to the tank chamber, as and for the purpose described'. for supplying the stema-boiler. DAVID POLLOCK.

I-am aware, also, of thejioat-Valves being Witnesses; used fort-he purpose of regulating the head JACGB STAUFFER, and fall of water. J R. EOLLOK.

or more circulating chambers for vvheating the 

